Combined gas-stove and fireless cooker.



J. E. CHAMBERS COMBINED GAS STOVE AND HRELESS COOKER.

APPLICATION FILED MAR-30.1911.

Patented May 15, 1917.

2 SHEETS-SHEET I.

ANQIWAAR CHAMBERS.

COMBINED GAS STOVE AND FIRELESS COOKER.

APPLICATION FILED MAR. 30, 19H.

Patented May 15, 1917.

2 SHEETS-SHEET 2.

To all whom it ma 7 concern:

ED grmqge Parana sauce;

Joni: E. CHAMBERS-Q01" SHELBYVILLE, INDIAN-A.

COMBINED GAS-STOVE .AND FIRELESS COOKER.

Specification of Letters Patent.

Application filed March 30, 1911. Serial No. 618,047.

Be it known that I, JOHN E. CHAMBERS, a citizen of the United States, residing at Shelbyville, in the county of Shelby and State of Indiana, have invented certain new and useful Improvements in Combined Gas- Stoves and Fireless Cookers, of which the following is a specification, reference being had therein to the accompanying drawing.

This'invention relates to improvements in a combined gas stove and fireless cooker.

One of the objects of the present invention is the provision of a device of this character which can be used when desired as an ordinary gas stove and for all the purposes and in the same manner as such stoves are ordinarily used, and which can also when desired be used as a fireless cooker, the burners of the'stove being utilized to produce the initial heat.

A further object of the present invention is the provision in a device of this character of improved means for preventing the passage of fuel to the burner in the cooking compartment when such compartment is adapted for use as a fireless cooker.

A further object of the invention is the provision in a device of this character of a cooking compartment having a burner therein and provided with an opening which is normally open when the device is to be used as an ordinary gas stove, in combination with a door or damper for closing said opening when the device is to be used as a fireless cooker, and operating means for such dooror damper of suc a construction as to shut off the flow of fuel to the burner as the door or damper is closed, such operating means being, however, so connected to the fuel valve as to permit any desired adjustment thereof as long as the door or damper is in open position.

A further object of the present invention is the provision of a device of this character which is made up of a plurality of similarly formed units so that the stove can be formed with any desired number of cooking compartments.

Other objects of the invention will be apparent from the detailed description hereinafter when read in connection with the accompanying drawings forming a part hereof, wherein a convenient embodiment of the invention is illustrated and wherein like numerals of reference refer to similar parts in the several views.

In the drawings, Figure 1 is a front elevation of a gas stove constructed in accordance with the present Fig. Sis a section on line 88 of Fig. 2,

parts being shown in elevation.

Fig. 9 is a detail view of one of the parts removed. a Referring now more particularly to the drawings, A designates a combined gas stove Patented May 15, 1917.

and fireless cooker constructed in accordance with the present invention, said stove comprising in the formillustrated, two superposed compartments B and C, which may be used in any manner in which the ordinary cooking compartments of a gas stove can be used and which may also be used as a fireles s cooker when desired. F or the purposes of illustration, I have shown the stove as consisting of two cooking compartments only, but from the detailed description hereinafter, it will be understood that the stove may be made up of as many compartments as desired and that such compartments may be constructed according to the uses for which they are designed.

The compartments B and C are similar in construction, each comprising a body D, the front, top, bottom and side walls of which are formed of separated sheets of metal between which is interposed a suitable packing of heat insulating material. The front of the body D of each of the compartments B wall of the compartment.

edges of the sides of the compartment. The

thickness that the side portions thereof substantially fill the rabbets so that the exterior of said side portions thereof will lie flush with the exterior of the side surfaces of the compartment. The band E is of a width to project above the upper edges of the offset I portions cl of the sides of the cooking compartmentfand the upper edge of the front The band E is secured in the rabbet by suitable bolts, or similar fastening devices which pass therethrough and engage the off-set portions d heretofore referred to. Projecting downwardly from the body of each of the com partments along the side edges thereof is a flange cl which is formed by off-setting the lower portions of the sides of the compartment inwardly to the same extent as the upper portions of the sides are off-set to form the off-set portions (1. The bottom sheet of each compartment is provided with downwardly extending flanges at the sides thereof which are adapted to fit within the flanges 03', of the body, and to be rigidly secured thereto by fastening devices of any suitable character.

Secured to the rear wall of the body D of each of the cooking compartments and extending longitudinally thereof is an open ended flue F, theends of which project slightly beyond the top and bottom of the body and the upper end of which is preferably made slightly smaller than the lower end thereof. The upper portion of the body v D of each of the compartments is provided in the rear wall thereof with a vent opening G which communicates with a small vent tube G which projects into the flue F and is preferably provided with a downwardly beveled outer end. The vent pipe G is smaller than the interior of the flue so as not to impede the passage of air and gases therethrough. Positioned within the inte rior of the body D of each compartment and over the inlet end of the vent opening G is a sheet metal guard or shield, a portion of which overlies the top of the cooking compartment and is spaced therefrom. The portion of the shield which overlies the inlet end of the vent tube is preferably imper-- forate while perforations are formed in the portion WlllCh overlies the top of the cooking compartment, thus preventing the heated gases in the cooking compartment from passing directly out through the vent opening therein. cooking compartments is provided centrally of. the bottom thereof .with a small therein is a deflector plate I which serves to cause an even distribution of heat within the compartment.

K designates the base of the stove which comprises a band of a size to receive the flanges. (Z depending from the bottom of the lowermost compartment and, from which depends the usual supporting legs K. In assembling the stove the lowermost compartment is fitted onto the base with the flanges 03 depending from the lower edges thereof extending into the band of the base and with the shoulders formed at the juncture of the The body D of each of the sides of the compartment and the flanges d extending downwardly therefrom resting directly upon the upperedge of theband of the base. Vith the parts in this position the lowermost compartment. is rigidly secured to the base by means of suitable securing bolts which pass through the sides of the band of the base and the side flanges depending from the bottom of the compartment. The upper compartment is then fitted onto the lower compartment with the flanges cl extending from the lower portion of said upper compartment fitting within the U shaped band E which is secured to the top of the lower compartment and with the shoulders formed adjacent the tops of the flanges (Z of the upper compartment resting directly upon the upper edge of said band. As the flanges (Z depend only from the sides and front of the lower portion of the upper cooking compartment, and as the band or frame E extends only around the front and sides of the adjacent portions of the upper, and lower cooking compartments, it will be seen that there will be provided at the back of the cooker an open space between the bottom of the upper cooking compartment and the top of the lower cooking compartment through which air can pass to the draft opening H in the bottom of the upper cooking compartment. \Vith the parts in this position securing bolts are passed through the side portions of the band E and the flanges of the upper compartment which are positioned within said band. \Vhen the compartments B and C are assembled in this manner, the lower portion of the flue F of the upper compartment will telescopically engage the upper portion of the flue F of the lower compartment, thus forming a continuous fiue common toboth cooking compartments. I It will of course be understood that while I have shown and described the stove as comprising but two compartments,

connected to any suitable flue .or chimney to carry off the obnoxious fumes. The top of the uppermost cooking compartment is fin--- ished by securing within the U -shaped band E which is secured around the upper edge .right angles thereto, the lower end of said .arm being curved -so as to partially under thereof a sheet metal-plate L, such plate being provided with depending flanges which snugly fit within the frame E at the top of the compartment and are rigidly secured thereto in .any desired manner with the top of the plate- L, substantially flush with the upper. edges of said frame. Pivotally secured to the outer end of the vent pipe G of each of the cooking compartments in a damper M which is adapted in one position to lie fiat upon the beveled outer end of said vent pipe so as to close the end thereof, said damper being preferably of metal and having an inner facing of heat insulating material m. The dampers M are each provided with an arm projecting laterally therefrom which is pivotally connected to one end of a link m, the other end of which is pivotally connected to one arm of a bell cranklever N which is pivoted to a suitable projection extending from the rear wall of. Pivotally connected to the free ends of thebell crank" the cooking compartment.

levers ,N and extending forward to a point 1n advance of the front of the cooking compartments are rods N, the rod N for operating the damper M of the upper cooking compartment B beinglocated in the space between the top and bottom of the cooking compartments B and C and extendingthe lower portions thereof. Connected to each of the laterally extending branch pipes O is a-valve casing-P from which a gas discharge pipe gas mixer P which .may he of any well known type and which is provided with a tubular extension'which is adapted to slip' over the projecting end of one of the burner supply pipes I and to be detachably secured thereto in any suitable manner. Positioned within each of the valve casings P and conments.

p extends into an air and trolling the flow of gas therethrough from the 'branch supply pipe 0 is a valve Q, which is provided with an elongated stem rotatable therewith to the upper end of whichis rigidly secured a laterally projecting operating handle Q the operating han- .d'le' being arranged to lie parallel with the branch supply pipe 0'. when the valve is in a position to prevent the flow of gas to the burner. Loosely mounted upon the elongated shank of each of the gas valves I Q is a lever B which is provided with an arm'R which extends downwardly therefromand is positioned substantially at lie and contact with the branch-pipe O when the leveroccupies' a position at right angles to said supply pipe The lower ends of the arms Rf which extend fromthe levers just described, are pivotal-1y connected 7 to the front ends of the damper operating rods N heretofore described, so -that by actuating the levers R the dampers M may be operated to open the 'closed ends of the-9o ventpipes of the cooking compartments.- Each'of the levers R is provided with an outwardly projecting lug 1- which is adapted to lie alongside of the operating handle Q of the valve Q upon the shank of which said lever ispivotally mounted.

The levers R normally occupy positions at substantially right angles to the branch supply pipes O, and when in-thisposition the dampers M controlled thereby are in their open positions so as to permit the free passage of gases from the cooking compart- The levers are always maintained in this position when the cooking compartments are to be used in the manner of cooking compartments of the ordinary gas stove, and it will be seen that while the levers occupy this position, the handles of the gas valves may be shifted to cut oil the flow of gas to the burners to any desired extent, without in any way affecting the position of the dampers controlling the vent passages. This is important as in the use of a gas stove it is frequently desired to use a very low flame and to at the same time have the vent passage open. When either 'of the cooking compartments is to be used as a fireless cooker, the lever R of such compartment is shifted to a position substantially parallel to the front of the compartment. During this movement of the lever B, the lug 1* will engage the handle Q of the valve Q, and move such valve to its closed position, thereby cutting off the flow of gas to the burner; It will thus be seen that it will be impossible to close the damper to convertthe device into a fireless cooker. without at the same time automatically cutting off the flow of fuel to the burner, and at the same time when either of the compartments is to be used as a gas stove, it will be seen that the gas' supply valve may be adjusted to any desired position without in any way restricting the vent passage leading from the compartment.

From the above described construction it will be apparent that th device may be made up of as many compartments as desired and that any one or all of such compartments may be at any time utilized as a g; s stove or as a tireless cooker.

IVhile a convenient embodiment of the invention is illustrated in the accompanying drawings, it will be understood that many changes may be made to the form and construction herein shown without in any way departingfrom the spirit and scope of the invention as defined in the appended claims.

I claim 1. In a combined stove and tireless cooker, a cooking compartment provided with an opening therein leading to the exterior thereof, a burner in said cooking compartment, a fuel valve controlling the passage of fuel to said burner,- said valve being provided with a rotatable stem, a damper for the opening in the cooking compartment, operating mechanism for the damper including an operating handle loosely mounted on the stem of the fuel va'lve, said operating handle and valve stem being provided with cooperating portions acting to turn the valve to closed position when the operating handle is shifted to move the damper to closed position and permitting free action of the valve independent of the damper operating mechanism.

2. In a combined stove and tireless cooker, a cooking compartment provided with an opening therein leading to the exterior there of, a burner in said cooking compartment, a fuel valve controlling the passage of fuel to said burner, said valve being provided with a rotatable stem, and an operating handle projecting laterally therefrom, a damper for the opening in the cooking compartment, op-

erating mechanism for the damper including a lever loosely mounted on the stem of the fuel valve and provided with a projection normally positioned alongside of the operating handle of the fuel valve so as to contact therewith as the lever is shifted.

3. In a combined stove and fireless cooker, a cooking compartment, provided with an opening leading to the outside, a burner for said cooking compartment, a fuel valve controlling thepassage of fuel to said burner, a handle for said valve, a closure for the opening in the cooking compartment, operating mechanism for the closure including an operating handle, the said handles being mounted to rotate about a common vertical axis, and operatively associated means whereby a movement of one handle in one direction will result in a movement of the other handle in the same direction, and said connection permitting independent movement of of one of said handles.

'4. In a combined stove and tireless cooker,

the combination of a cooking compartment provided with an opening leading to the outside, a damper for controlling said opening, a burner for the cooking compartment, a valve for controlling the fuel supply to said burner, an operating handle for the valve, operating mechanism for the damper, an operating handle for said mechanism, said operating handles being mounted to rotate about a common axis, and an operative engagement between said handles whereby as the damper is movedto closed position, the

burner valve is sin'iultaneously moved to closed position, and said operative engagement permitting free independent movement of the fuel supply valve when the damper is open.

5. In a combined stove and tireless cooker, the combination of a cooking compartment provided with a vent opening, a damper for said opening, a burner for the compartment, fuel supply means for the burner, a rotatable valve for regulating the fuel supply, a handle for said valve, operating mechanism for the damper including a handle, said handles being arranged adjacent to one another and a connected part of one handle constituting a support for the other handle, the handle for the fuel valve being adapted to moveindependently of the handle for operating the damper, and inter-engaging means carried by the handles whereby as the damper handle is moved to close the damper the fuel supply valve is moved to closed position.

In testimony whereof I affix my signature in presence of two witnesses.

I JOHN E. 'oHA enas. Witnesses:

CHARLES A. HACK, GEO. H. MEIKS. 

